Fuji Stout-Lite I believe, so possibly Sunn who used it.
What's the serial number ?
Probably around 94 ish from the style of frame setup, but I don't anything about the bikes.
EDIT to add better wording
I would guess Sunn Revolt from 94/95 ish made from Fuji Stout-Lite tubing, but I do not know the bikes or frames. Do a search on that and see if anything crops up or wait till the mince pies have all gone and others get on here
Looks identical to a frame I picked up recently labelled as a "MASSI", with same Fuji label and Richey drop outs too.
I'll try to get some pictures up for comparison.
It could be a Sunn, or it could be a Massi or it could be a Merlin UK or it could be a Heffs or it could be any manner of companies who bought these frames from Fuji. What is certain is that these were generic, mass produced and mass rebranded frames that were made by Fuji out of Stout Light tubing. My money is on this being a Merlin UK branded one as they really pumped these out in huge numbers.
Good frames but nothing high end. As I mentioned in the other thread, be careful about the rust on the BB cluster as that could be indicative of water build up in the seat tube leading to rust cracks. the Nickel plating was nice and strong but also hid rust building up under it until it was too late.